... ) 3.Used in R12,R22,R134A etc. 4.Factory price New Product of Halogen Leak Detector, Refrigerant Gas Leak Detector, DSA ... -200, 0.1 oz/yr(3g/year), The most technologically advancedIntroduction The DSA-200 refrigerant Gas Leak ... detect leaks as small as 0.1 oz/yr(3g/year) in R12,R22,R134a and other halogen refrigerant systems.DSA ...